The Open Systems Interconnection (OSI) model

Today, we're going to go back in time a little bit,…back in time to before there was an Internet.…I know that probably sounds a little bit freaky.…A lot of people watch us like,…"There was always an Internet."…Yeah, that depends on how old you are.…There was also stuff that happened in the past…that you have no concept of because you weren't there,…this being one of them, perhaps.…If we go back in time, we're going to talk about -…keep in mind where the Internet came from,…originally the Department of Defense.…

The Department of Defense had a plan.…They woke up one morning,…"We're going to invent the Internet."…Perhaps it didn't go exactly like that,…but in order to accomplish something of this magnitude,…however small the beginnings,…there had to be a plan.…Imagine it was you.…There is no Internet.…There's no, in fact, networking,…connecting computers from disparate geographic location.…It didn't exist.…You wanted to make it happen.…It's like, "Well, we have to have a plan."…Part of the plan was they actually had…

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Released

1/22/2013

Discover the fundamentals of networking. Mark Jacob takes you on an exploration of various network topologies, different cable types, and the functionality of network devices, and helps you understand collision domains, the ways in which switches move traffic, and message types. Plus, learn how to troubleshoot basic switch issues.